E85 Experience
04-07-14, 09:11 AM
#278
So who has the gm flex fuel part number?
And just out of curiosity. I've got a decent question. Let's say the closest e85 station is done 65 miles away. Can I run pump 91 and e85 in the same tank? And tin the sensor so that at anything less than 50% it'll rub low boost pressure at around 12lbs and anything above say 70% it'll go up yo 20lbs?
And just out of curiosity. I've got a decent question. Let's say the closest e85 station is done 65 miles away. Can I run pump 91 and e85 in the same tank? And tin the sensor so that at anything less than 50% it'll rub low boost pressure at around 12lbs and anything above say 70% it'll go up yo 20lbs?
04-07-14, 09:32 AM
#279
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Join Date: Aug 2006
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depends on ECU.
With the haltech sport you have all kinds of adjustments. Boost and timing compensations. When set up correctly you have options to run a lower boost at 50% ethanol and higher boost at 85% ethanol. Easy.
Something to think about is a 4 port boost solenoid with a very low pressure spring in the waste gate. Say a 6psi spring. Then you can have the boost curve at 10% ethanol at 6 psi boost for a really safe tune. Then at 85% ethanol you can run 40psi boost.
Then throw in a speed sensor.
With the haltech sport you have all kinds of adjustments. Boost and timing compensations. When set up correctly you have options to run a lower boost at 50% ethanol and higher boost at 85% ethanol. Easy.
Something to think about is a 4 port boost solenoid with a very low pressure spring in the waste gate. Say a 6psi spring. Then you can have the boost curve at 10% ethanol at 6 psi boost for a really safe tune. Then at 85% ethanol you can run 40psi boost.
Then throw in a speed sensor.
04-07-14, 09:33 AM
#280
So who has the gm flex fuel part number?
And just out of curiosity. I've got a decent question. Let's say the closest e85 station is done 65 miles away. Can I run pump 91 and e85 in the same tank? And tin the sensor so that at anything less than 50% it'll rub low boost pressure at around 12lbs and anything above say 70% it'll go up yo 20lbs?
And just out of curiosity. I've got a decent question. Let's say the closest e85 station is done 65 miles away. Can I run pump 91 and e85 in the same tank? And tin the sensor so that at anything less than 50% it'll rub low boost pressure at around 12lbs and anything above say 70% it'll go up yo 20lbs?
https://www.rx7club.com/alternative-.../#post11448625
As far as the switching, it's going to depend on your ECU and the what integrated capabilities it has.
07-11-14, 04:23 PM
#294
Hey guys, ordered this stuff from Amazon. Not sure if I got the right stuff, benol premix.. hitting the dyno this week so I need to know if I can use this stuff add pre mix on e85 or if I need to get other stuff.
Attachment 537145
Attachment 537145
Sammy
07-12-14, 09:19 AM
#299
Was able to get some tuning in. First session with e85. Ended short due to bossy control problems but man...this stuff is magic
Attachment 537590
Attachment 537590
Not familiar with your build, but are you planning on tuning out to 8k?
Very impressive results!
07-12-14, 09:47 AM
#300
